1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107d77e0961baaad2607f17ae33ecf02f7ea225ce3637b0f086fa9a43da075f1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a1faa96-7b5c-4213-8eea-1f86d930e705.json and https://artists.proofprofile.net/proofs/artist/2a1faa96-7b5c-4213-8eea-1f86d930e705.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985aec26d95454360b33adbdb29376ca2deee32c7b59fc733fdcbdb3578a168b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57550df48a793fb01a8badac90d6968ab7d449315b400ae306932dc2ff46d6e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71011452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85f284b971cb2701aac2575d19de61cb1615ef45454fd930133fe4c90ebf096. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf419584061715e395aa9a5f37f28d85b22745e1bc9a3c91264cb79f2da2d333a. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:18:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71011451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ae3b5d4d3d7b284346ec9bdfddb528ebfc6c80ef7713e4d7c361f49b60737b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eda80293fe1dfe21a1fbbd798016205263564dac0c19867a9f3e12e14a42b8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0cb0b45b0d2f57c38b28bc6697e2ef502872897cf7ce8427a4e22577a9dc01. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa503e6c3e4a3f6f75b5b69bc6d0b43fd30ed6b8946f068251d06e7d23a1f23f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbaa552909825ba4089aeb8db4b39c07103ddbf41c5441d5a4f4beee1f007b6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09b414c3192799f262124983c104bf1a40f49a34ed6c668032c987cfffaf16b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71003977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf582447644e023f51c9d9109597c955fc19c51aac8e96d45fae59b75fd3c9f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9afaf051e92b5e9f820d5e3ab18352eabf53a45ecbdce46a0720b038fd1661e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUV71100380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655fc00ab1006a90d739843ca4cdd45035fabbbebb51e8a3f4ab2a86ccae13c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09b414c3192799f262124983c104bf1a40f49a34ed6c668032c987cfffaf16b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71003977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf582447644e023f51c9d9109597c955fc19c51aac8e96d45fae59b75fd3c9f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0cb0b45b0d2f57c38b28bc6697e2ef502872897cf7ce8427a4e22577a9dc01. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bef5792e8b10385d7a93a9a026b2b3befc4c059726876e445975e05e1491fbe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71008989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85f284b971cb2701aac2575d19de61cb1615ef45454fd930133fe4c90ebf096. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74224db770f2f7f7af79117f786ce3f04abb82883f7452bdae2d1d46d698d387. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985aec26d95454360b33adbdb29376ca2deee32c7b59fc733fdcbdb3578a168b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6339a2d2eb5ac2a93a264b70ee27cfd94c95c1579393f13542eb9be1d210dee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ae3b5d4d3d7b284346ec9bdfddb528ebfc6c80ef7713e4d7c361f49b60737b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbaa552909825ba4089aeb8db4b39c07103ddbf41c5441d5a4f4beee1f007b6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa503e6c3e4a3f6f75b5b69bc6d0b43fd30ed6b8946f068251d06e7d23a1f23f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eda80293fe1dfe21a1fbbd798016205263564dac0c19867a9f3e12e14a42b8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71010812.